/**
 * 用户管理模块
 */
const router = require('koa-router')()
const util = require('../utils/util')
const User = require('./../models/userSchema')
const Menu = require('./../models/menuSchema')
const Role = require('./../models/roleSchema')
const jwt = require('jsonwebtoken')
const Counter = require('./../models/counterSchema')
const md5 = require('md5')
router.prefix('/users')
// users/login
router.post('/login', async (ctx) => {

  try {
    const { userName, userPwd } = ctx.request.body
    /**
     * 返回数据库指定字段的三种方式
     * 1 'userId userName userEmail state role deptId roleList'
     * 2 {userId:1 , _id:0}
     * 3 select('userId')
     */

    let res = await User.findOne({ userName, userPwd: md5(userPwd) }, 'userId userName userEmail state role deptId roleList')
    if(!res){
    res = await User.findOne({ userName, userPwd: userPwd }, 'userId userName userEmail state role deptId roleList')
    }
    if (res) {
      if(res.state===2){
        ctx.body = util.fail('该员工已离职')
        return
      }
      const data = res._doc;
      const token = jwt.sign({
        data
      }, 'jason', { expiresIn: '1h' })
      data.token = token;
      ctx.body = util.success(data)
    } else {
      ctx.body = util.fail('用户名或者密码不正确')
    }
  } catch (error) {
    ctx.body = util.fail(error.msg)
  }


})

// 用户列表
router.get('/list', async (ctx) => {
  const { userId, userName, state } = ctx.request.query
  const { page, skipIndex } = util.pager(ctx.request.query)

  let params = {}
  if (userId) params.userId = userId
  if (userName) params.userName = userName
  if (state && state != '0') params.state = state
  try {
    const query =  User.find(params, { _id: 0, userPwd: 0 })
    const list = await query.skip(skipIndex).limit(page.pageSize)
    const total = await User.countDocuments(params)
    ctx.body = util.success({
      page: {
        ...page,
        total,
      },
      list
    })
  } catch (error) {
    ctx.body = util.fail(`查询异常${error.stack}`)
  }
})


router.post('/delete', async (ctx) => {
  const { userIds } = ctx.request.body
  // User.updateMany({ $or: [{ userId: 10001 }, { userId: 10002 }] })
  const res = await User.updateMany({ userId: { $in: userIds } }, { state: 2 })
  if (res.modifiedCount) {
    ctx.body = util.success(res, `共删除成功${res.modifiedCount}条`)
    return;
  }
  ctx.body = util.fail('删除失败');
})

router.post('/operate', async (ctx) => {
  const { userId, userName, userEmail, mobile, job, state, roleList, deptId,
    action } = ctx.request.body

  if (action == 'add') {
    if (!userName || !userEmail || !deptId) {
      ctx.body = util.fail('参数错误', util.CODE.PARAM_ERROR)
      return
    }
    // 自增长

    // 用户名和邮箱不能重复

    const res = await User.findOne({ $or: [{ userName }, { userEmail }] }, '_id userName userEmail')
    if (res) {
      ctx.body = util.fail(`监测到有重复的用户 , 信息如下：${res.userName} - ${res.userEmail}`)
    } else {
      try {
        const doc = await Counter.findOneAndUpdate({ _id: 'userId' }, { $inc: { sequence_value: 1 } })
        const user = new User({
          userId: doc.sequence_value,
          userName,
          userPwd: md5('123456'),
          userEmail,
          role: 1,
          roleList,
          state,
          job,
          deptId,
          mobile
        })
        user.save()
        ctx.body = util.success({}, '用户创建成功')
      } catch (error) {
        ctx.body = util.fail(error.stack, '用户创建失败')
      }
    }

  } else {
    if (!deptId) {
      ctx.body = util.fail('部门不能为空', util.CODE.PARAM_ERROR)
      return
    }
    try {
      const res = await User.findOneAndUpdate({ userId }, { mobile, job, state, roleList, deptId })
      ctx.body = util.success(res, '更新成功')
      return
    } catch (error) {
      ctx.body = util.fail('更新失败')
    }
  }




})

router.get('/all/list', async (ctx) => {
  try {
    const list = await User.find({}, "userId userName userEmail")
    ctx.body = util.success(list)
  } catch (error) {
    ctx.body = util.fail(error.stack)
  }
})

router.get('/getPremissionList', async (ctx) => {
  let authorization = ctx.request.headers.authorization
  let { data } = util.decoded(authorization)
  let menuList = await getMenuList(data.role, data.roleList)
  let actionList = getActionList(JSON.parse(JSON.stringify(menuList)))
  ctx.body = util.success({ menuList, actionList })
})

async function getMenuList(userRole, roleKeys) {
  let rootList = []
  if (userRole == 0) {
    rootList = await Menu.find({}) || []
  } else {
    let roleList = await Role.find({ _id: { $in: roleKeys } })
    let permissionList = []
    roleList.map(role => {
      let { checkedKeys, halfCheckedKeys } = role.permissionList
      permissionList = permissionList.concat(...checkedKeys, ...halfCheckedKeys)

    })
    permissionList = [...new Set(permissionList)]
    rootList = await Menu.find({ _id: { $in: permissionList } })
  }
  return util.getTree(rootList, null, [])
}

function getActionList(list) {
  const actionList = []
  const deep = (arr) => {
    while (arr.length) {
      let item = arr.pop();
      if (item.action) {
        item.action.map(action => {
          actionList.push(action.menuCode)
        })
      }
      if (item.children && !item.action) {
        deep(item.children);
      }
    }
  };
  deep(list)

  return actionList
}
module.exports = router
